山西土壤Hg，Cd，As，Pb最高允许浓度研究

Approach of Permitted Maximum Concentration of Hg, Cd, As and Ph of Soil in Shanxi

根据国内外制订土壤污染物质最高允许浓度的原则，利用山西土壤元素地球化学背景值及土壤生态效应的研究资料，初步确定了山西省土壤中Ｈｇ，Ｃｄ，Ａｓ，Ｐｂ等污染物的最高允许浓度：Ｈｇ０．５ｍｇ／ｋｇ，Ｃｄ０．８ｍｇ／ｋｇ，Ａｓ２２ｍｇ／ｋｇ，Ｐｂ５０ｍｇ／ｋｇ。与国外土壤最高允许浓度及我国惯用的土壤污染起始浓度（平均值加２倍标准差）相比，本研究结果更加切合山西实际，并具良好的实用性。

According to the national and international principle in determing the highest allowable concentration of soil pollution elements, the authors determined the highest allowable concentration of Hg, Cd, As and Ph in soil as 0. 5 mg/kg, 0. 8 mg/kg, 22 mg/kg and 50 mg/kg, respectively, on the basis of geochemical background values of soil elements and soil ecological effect. The concentration is more practical compared with the highest allowable concentration of soil elements in foreign country and the practical pollution starting concentration in China .